My buddy Ofutur has really been digging into the latest BlackBerry OS 10.2.1.1.1055 leak. The latest finding he posted on CrackBerry Forums is from the tutorials showing a device we have heard about before but not seen to this detail. It is called the C-Series and looks like it comes in at least two variants based on the pictures placement of the SIM card. This seems to have the same material as the Z10 with the shape of a Z30 and a removable battery. It definitely also looks like a lower end model in a smaller size otherwise that battery must be HUGE.